Home / 119,128.08-164,399.88-65,416.56

Finding the Fourth Proportional to 119,128.08, 164,399.88 and 65,416.56

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Solution

The fourth proportional to 119,128.08, 164,399.88 and 65,416.56 is: 90,276.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,128.08 : 164,399.88 = 65,416.56 : x
  2. Step 2: Convert to fraction form
    119,128.08/164,399.88 = 65,416.56/x
  3. Step 3: Cross multiply
    119,128.08x = 164,399.88 × 65,416.56
  4. Step 4: Simplify right side
    119,128.08x = 10,754,474,614.01
  5. Step 5: Solve for x
    x = 10,754,474,614.01/119,128.08
  6. Step 6: Final answer
    x = 90,276.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.